Rotary motor.



D. CRAYSSAC.

ROTARY MOTOR.

APPLICATION man JAN-18.1913. I

1,163,323. Patented Dec. 7', 1915.

fie sire' ('r yssac, 0a)." M

COLUMBIA PLANOGRAPM cu, WASHINGTON. D. c.

DESIRE CRAYSSAC, OF VILLEURBANNE, RHONE, FRANCE.

ROTARY MOTOR.

Specification of Letters Patent.

Patented Dec. 1915.

Application filed January 18, 1913. Serial No. 742,900.

To all whom it may concern ,Be it known that I, Desist: CRAYssAo, a citizen of the French Republic, residing at Villeurbanne, Rhone, in France, have invented certain new and useful Improvements in Rotary Motors, of which the following is a specification.

The present invention relatesto improvements in rotary explosion motors.

An essential feature of the invention is that the connecting rods between the pistons and the shaft are maintained in connection with the piston rods by the action of centrifugal force and of the motor explosions which act in the direction from the center of the motor toward theperiphery. Alternating shocks and the resulting inconveniences ar thus prevented.

For the better comprehension of the invention the same is shown in the accompanying drawings, in which Figure 1 is a side elevation of a three cylinder motor comprising the improve ments of this invention. Fig. 2 is a section on line 2-2 of Fig. 1.

In the motor illustrated the cylinders a perpendicular to the fixed shaft 9 are connected to one another by a crown 9 but they may be formed of a single piece. The pistons b are arranged in the cylinders a, which are open at their outer ends, so that their rods 6 extend through the said open ends of the cylinders. The rods 6 have at their outer ends grooves o in which lie the horizontal portions 0 of double or bent connecting rods 0 each made in a single piece and shaped so as to allow the pistons to pass into the cylinders as can be seen in the drawing. These rods care connected to disks 7 mounted at each side of the crank shaft d, the said disks being provided with holes 6 in which bent ends 0 of the rods 0 engage. When the motor is working, the piston rods 6 have constant connection with the parts 0 of the rods 0 by the action of the centrifugal force and the arrangement of the rods 0, allows of actuating the shaft by traction and shocks arising from alternating movements are prevented, since the force due to the explosion of the explosive mixture acts in the same direction as the centrifugal force, and the latter at the return stroke of the piston assures constant connection between members 0 and b and of the extremities of the rods 0 at their points of attachment with the disks 7. This method of forming the connections of the rods 0 with the pistons and disks f, obviates the use of collars or bearings which are sub jected to great wear.

The supply and exhaust of the motive fluid is effected as follows: The motor comprises two concentric crowns mounted on the crank of the shaft (Z, the outer one 9 carries the cylinders a and the inner one it is the distribution crown. These two crowns turn in the same direction but the rotation of the inner crown h is retarded with respect to the rotation of the crown 9 The crowns are provided with suitable orifices or ports and the difference in speed is calculated so as to assure the correspondence of the respective orifices or parts to assure the proper admission and exhaust of the gases for a four stroke cycle. The retarding movement of the crown it is obtained by the following means: The said crown it carries interior teeth in engagement with an eccentric pinion 70 driven by a lever Z, (or by any other means), which is itself actuated by the movement of the cylinders. The gaseous mixture is introduced through the hollow part (Z of the shaft and passes to a member or collector i whence it passes through the angular ports m, which by reason of the rotation of crown h, successively coincide with th collector i. It is then sucked into the cylinders through the passages 12, at the moment when the coacting orifices of ports m and passages a meet. The exhaust is made at the end of the stroke through orifices in the walls of the cylinder communicating with another series of ports formed in the crown h.

What I claim as my invention and desire to secure by Letters Patent of the United States is,:

1. A rotary explosion motor comprising a crank shaft, a plurality of connected rotary cylinders mounted radially on the crank of said shaft, pistons within said cylinders, piston rods appertaining to said pistons extending from the outer ends of said cylinders and each having a groove at its free end, means for the supply of explosive mixture to said cylinders at the inner ends thereof so that the forces of explosion are directed from the center of the motor outward, means for the exhaust of the burnt shaft and their central portions lying in the grooves of said piston rods.

2. A rotary explosion motor comprising a crank shaft, a plurality of connected rotary cylinders mounted radially on the crank of said shaft, pistons within said cylinders, piston rods appertaining to said pistons extending from the outer ends of said cylinders and each having a groove at its free end, means for the supply of explosive mixture to said cylinders at the inner ends thereof so that the forces of explosion are directed from the center of the motor outward, means for the exhaust of the burnt gases from said cylinders, disks provided with orifices mounted on the trunnions of said shaft at each side of the crank and stirrup shaped rods each formed of a single piece having their ends inwardly turned and engaging in said orifices of said disks and their central portions lying in the grooves of said piston rods and maintained in engagement therewith by the action of centrifugal force and of the motor explosions.

In witness whereof I have signed this specification in the presence of two witnesses.

DESIRE CRAYSSAC. Witnesses LOUIS JANIN, JEAN GERMAIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). O. 

